Photo., Bureau of l-^ntorn ology, Dept. Agriculture, I'.S.A. 

 Fig. 35. — Joint of an Opuntia from Marble Falls, Texas, showing the work of Marmara npunfidla. 







Tig. 36.— An Opuntia Moth-hover^2IcUtam iiroJcniaUs^yrhich attacks Prickly Pear iu parts of the Tnited 

 States and the West Indies, o, hirva ; c, cocoon; f, pupa ; <j. moth. (Reproduced by IMr. 0. S\yezey, 

 H.I.S.P.A., Honolulu, from the original in the Proc. Entomol. Soc, AVa.shingtou, iii., 18!1G, p. 132). 



